Composite washer



(No Model.)

O. A. RODNEY.

I COMPOSITE WASHER.

No. 269,119. Patented Dec. 12, 1882 131/ his fltiorne a W JNVE-N'TOR,Caesar Rodney} n. PETERS Wuhinnm. ac.

UNITED STATES PATENT OFFIGEO CAESAR A. RODNEY, OF WILMINGTON, DELAWARE.

COMPOSITE WASHER.

SPECIFICATION forming. part of Letters Patent No. 269,119, datedDecember 12, 1882.

Application filed October 16, 1882.

To all whom it may concern:

Be it known that I, CAESAR. A. RODNEY, of Wilmington, in the county ofNew Castle and State of-Delaware, have invented certain new and usefulImprovements in Composite Washers, of which the following is aspecification. My invention relates to the class of composite washersparticularly useful as locks for seated in a stiff metal cup. the rim ofwhich is fitted into the rim of another stiff metal cup, 7

so as to beheld therein by friction with the elastic ring or bodycontained within and between said cups, the said cups being capable oftelescoping or sliding one within the other without rigid obstructionwhen subjected to pressure which compresses the inclosed oompressiblering or body.

The accompanying drawing represents a sectional perspective view takenthrough the center of one of my improved washers.

An elastic or compressible ringor body, A, is seated in a stiff metalliccup, B, so that the rim 1) of said cup surrounds the periphery of saidring or body. The depth of the rim b, however, is less than thethickness of said ring or body A, and it is fitted intothe rim b ofanother stit't'metallic cup, B, said rim b of the cup B being likewisepreferably of less depth than thethickness of the elastic ring A.

The rims of the two cups B B are fitted one into the other sufficientlytight to be held together by friction with the ring or body A containedwithin and between the cups, while the cups are capable under pressureof telescoping or sliding one within the other without obstruction fromrigid contact, so as to permit the elastic body A to be compressedwithout permitting it to spread under compression.

The improved washer is provided with the usual bolt-hole or opening, ,0,to permit the washer to be passed on over the bolt in ad- (No model.)

Vance ot' the nut. As the nut is screwed homo upon the bolt it will bearagainst the outer side of the composite washer, while the inner sidethereofwill be forced against the surfacefor instance, the fish plateconnecting the adjacent ends of track rails, through which the bolt ispassed. As the screwing home of the nut is continued the stifi' metalcups will telescope or slide one within the other under the pressure,and will compress the elastic ring or body A, which cannot spreadlaterally, as itis firmly retained by the double walls formed by theoverlapping rims of the containing-cups. When the limit of compressionis reached or the nut has been firmly screwed up, said nut will befirmly looked upon its bolt by the clasticity of the ring or body A,which will press with such force through its containing-cup upon the nutas to prevent said nutfrom turn- I prefer the stiff metal cups B B to beof comparatix ely thin steel and the inclosed elastic body or ring to beof the material now well known in the arts as vulcanized fiber.Vulcanized fiber, by its tenacity, strength, durability, elasticity, andcomparative economy, is especially desirable as theinclosed ring or bodyof my iinproved composite washer, and particularly when said washers areapplied to the.

bolts of railway track joints-for instance, where the washers aresubjected to heavy and unequal pressure.

I claim as my invention- The improved composite washer, consisting of acompressible ring or'body contained within stiff telescoping metal cups,said cups being united together with the compressible ring between themby the frictional contact of interfitting rims, substantiallyasdescribed, whereby, while the cups are capable of telescoping one withinthe other under the compression of the nut, there is at the same time adouble wall to prevent spreading of the inclosed elastic body.

'In testimony whereof I have hereunto subscribed my name this 14th dayof October,A. D. 1832.

O. A. RODNEYL

